The length of the rectangle is 15 dm, and its area is 60 dm sq. Calculate the perimeter of a rectangle?

1. From the problem statement, we know that the length of the rectangle is 15 dm.

2. Let’s calculate what the width of this rectangle is, if from the data presented in the problem statement we also know that its area is 60 dm ^ 2. To do this, the area of the rectangle must be divided by its length. Let’s write down the solution:

60/15 = 4 cm.

3. Next, let’s calculate what the perimeter of the given rectangle is. To do this, we calculate the sum of the lengths of all its sides. We get:

P = 2 * (15 + 4) = 2 * 19 = 38 cm.

Answer: The perimeter is 38 cm.